An entirely new principle established -- individual condition before
God

In chapter 33, in view of these judgments, which put His people on
entirely new ground (for they were judged as Loammi, with the nations,
and this is why the prophecy can look on to the last days, although
the judgments had been but partial) -- in view then of these
judgments, God establishes an entirely new principle, namely,
individual conduct as the ground of the dealings of God, in contrast
with the consequences of national sin (v. 10, 11). Thus the door was
still fully open to individual repentance founded on a testimony that
applied individually, whatever the national judgment might be. The end
to which the judgment applies is in contrast with the effect to be
produced by it on the individual, and that in order to confirm the
principles. Faith would not be shewn now by reckoning on the promises
to Israel, or on the intervention of God in behalf of His people as in
possession of His promises, for the people were judged; and the very
thing that would have been faith, had it been the time of the
promises, and that hereafter also will be faith, is but hardness of
heart in the time of judgment (v. 24). Compare Isaiah 51: 2, a passage
often entirely misapplied. The little remnant in the latter days may
trust in a God who had called out one man alone and had multiplied
him; but such a thought on the part of the people, when God was
cutting off the multitude of them because of their iniquities, would
only cause the judgment to be more keenly felt. In this way of
judgment on the iniquities of which they had been nationally guilty
(and not by a blessing which presumption would snatch from God), they
should know that Jehovah was God.